Mankind can no longer reproduce because of gene manipulation aimed at making life longer. The clones ruling the bottomless underworld may have become fertile. Parton is selected to go on a mission through a subterranean labyrinth crawling with monsters to secure humanity's future.
| Actor | Role |
|---|---|
 Takahide HoriParton / Alexandre / Francis / Julian / Hokuro / Doctor / Assistant / Mummies / Boss / Subordinate / Other (voice) | Parton / Alexandre / Francis / Julian / Hokuro / Doctor / Assistant / Mummies / Boss / Subordinate / Other (voice) |
| AAtsuko MiyakeNico / Children / Woman (voice) | Nico / Children / Woman (voice) |
| YYuji SugiyamaWoman Bosses (voice) | Woman Bosses (voice) |